Building block of wood



Dec. 9, 1952 f N. R. ALENlUs 2,620,527 i BUILDING BLOCK OF WOOD y Filedsept. 21, 1948" 2 SHEETS---SHEET l Dec. 9, -1952 N. Ala. ALENIUS2,620,527

BUILDING BLOCK OF WOOD Filed Sept. 21, 1948 2 SHEETS-SHEET v2 PatentedDec. 9, 1952 implication-September 21,1948, Serial No.f.50,395

In Finland May 522, ..1948

'1 This invention refers to -a `rectangular or quadratic constructionblock of wood for dif'- :ferent lpurposes, consisting .of vboards whichare connected to each other by at least two edge locking-pieces andwhich may also be connected by inner locking-pieces, with which theboards are glued together. The block may be used for wall, floor andceiling blocks for building, as flooring, as panels, for concretemoulding forms etc.

The invention refers more specifically to a construction block and thelike comprising a plurality of boards arranged in side by siderelationship, the boards having end portions thereof cut away to formend flanges thereon, edge locking-pieces extending transversely of saidboards in contact with the ends thereof, and a sheet member covering aside of said boards and extending over said edge locking pieces. 'I'heportions of said sheet extending over said edge pieces are glued to saidedge pieces, said edge pieces being glued to said end anges of theboards opposite the connection thereof with said sheet, and said endflanges of the boards having a portion thereof out of contact with saidedge pieces inwardly toward said boards. 'I'his portion as well as theunglued portion of the covering sheet being flexible or yielding so thatno stresses, that could break the glued joints can be transferredbetween said edge locking-pieces, said boards and said covering sheet.

This invention refers further to a construction block and the likecomprising a plurality of boards arranged in side by side relationship,said boards having end portions thereof cut away to form an upper andlower flange thereon and a space therebetween, the lower of said flangesextending beyond the upper of said flanges. Edge locking-pieces extendtransversely of said boards, said edge pieces being grooved to abut saidupper flange and being in contact with that portion of the lower of saidflanges extending beyond the upper. A sheet member covers the upper sideof said boards and extends over said edge locking pieces, said sheetbeing glued to said edge locking-pieces but free from said boards, saidedge pieces being glued to the extended portions of the lower of saidflanges, said space between said flanges being only partially filled bysaid edge pieces.

'I'he invention is illustrated by three examples in the accompanyingdrawing, in which Fig. 1 shows a cross sectional view of one form andFig. 2 is a similar view showing another example of the invention. Fig.3 is a perspective View of JIigl.v Eig. 4 illustrates -'I indicatesledge "locking-pieces ('also `inner locking-pieces can be used, lbut arenot Ashown in the drawing for simplicity), 3 indicates boards, 4 an endflange formed in the board by cutting a part of the board away. L is aglued joint between the piece l and the board 3 and F indicates anunglued portion on the flange 4, which forms a flexible or yieldingjoint between the board and the locking-pieces.

On account of this flexible joint no breaking of the glued joint L cantake place.

The upper side of the blocks is covered by a sheet l0, as stated above.This sheet I0 is connected by a glue-joint L with the locking-pieces l,but its remaining part is free from the surface of boards 3, so that thewhole of the upper side of the boards 3 can be considered asconstituting a flexible part F.

It is especially pointed out, that the covering sheets IU giveextraordinarily fine and smooth surfaces, especially when made ofcardboard or such like fiber material, which is moistened and swells orexpands before being glued down, after which in a dried up state itshrinks to form a tightened, even surface.

1t is also pointed out, that when as stated above the edge and the innerlocking-pieces if used on one side of the block are covered from outsideby means of a sheet ID stretched over the block, this also includes theform of construction, that the sheet l!! does not cover the Whole of thelocking-pieces. The sheet Ill can, depending on the width of thelocking-pieces, also be sunk in A a cutout portion in thelocking-pieces, in which case it is glued together with thelocking-pieces only over the said cutouts, while the remaining portionof the locking-pieces remains uncovered. This is illustrated inperspective in Fig. 4, which in other respects corresponds to theexample of Fig. 2, but where the sheet I0 does not extend to the outeredge of the edge pieces. Instead the sheet I0 is sunk into a recess inthe edge pieces.

I claim:

l. A construction block and the like comprising a plurality of boardsarranged in side by side relationship, said boards having end portionsthereof cut away to form end flanges thereon, edge locking-piecesextending transversely of said boards in contact with the ends thereof,and a sheet member covering a side of said boards and extending oversaid edge locking-pieces, said sheet being glued to said edge lockingpieces but free from said boards, said edge pieces being glued to saidend fianges of the boards opposite the connection thereof with saidsheet, said end flanges of the boards having a portion thereof out ofcontact with said edge pieces inwardly toward said boards, this portionas well as the unglued portion of the covering sheet being exible andyielding so that no stresses, that could break the glued joints can betransferred between said edge locking-pieces, said boards and saidcovering sheet.

2. A construction block and the like compris-v ing a plurality of boardsarranged in side by side relationship, said boards having end portionsthereof cut away to form an upper and lower flange thereon and a spacetherebetween, the lower of said anges extending beyond the upper of saidflanges, edge locking-pieces extending transversely of said boards, saidedge pieces being grooved to abut said upper flange and being in contactwith that portion of the lower of said anges extending beyond the upper,a sheet member covering the upper sidev of said boards and extendingover said Yedge locking-pieces, said sheet being glued to said edgelocking-pieces but free from said boards, the unglued portion of saidsheet being flexible and yielding, said edge pieces being glued to theextended portions of the lower of said flanges, said space between saidflanges being only partially lled by said edge pieces.

NILS R. ALENIUS.

REFERENCES CITED The following references are of record in the le of`this patent:

UNITED STATES PATENTS Number Name Date 87,853 Kappes Mar. 16, 1869680,930 Lewis Aug. 20, 1901 2,226,332 Bacci Dec. 24, 1940 2,525,009Alencus Oct. 10, 1950 FOREIGN YPATFNTS Number Country Dartev

